PDF malware analysis — malicious · e2f83b5a133befb0

MALICIOUS

PDF

12.8 KB

MD5: 20de1e0d384184ed2597e157d031f365 SHA-1: 323ef36bbcfd115f8387e2223ba67930302557c1 SHA-256: e2f83b5a133befb0ea69363a6675ab448cae9529a5d419f4cc945fcd4fdb2eac

140 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.002 Malicious File

The file is a PDF containing embedded JavaScript, identified as malicious by ClamAV and triggering critical heuristics related to CVE-2007-5659. The JavaScript is obfuscated and appears to be part of a multi-stage exploit chain, with extracted files named 'legacy_pdfkit_stage_000.js' and 'legacy_pdfkit_stage_001.js' suggesting further deobfuscation and execution. The primary intent appears to be the exploitation of the PDF reader via the Collab.collectEmailInfo method to download and execute additional malicious content.

Heuristics 5

Collab.collectEmailInfo — CVE-2007-5659 critical CVE exact CVE_2007_5659

PDF JavaScript calls Collab.collectEmailInfo — CVE-2007-5659 is a buffer overflow in Adobe Reader triggered by a long argument or heap-sprayed message field passed to Collab.collectEmailInfo(). Part of a series of Acrobat JS API exploits. (identified after JavaScript deobfuscation)
ClamAV: Pdf.Exploit.Agent-36064 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Exploit.Agent-36064
JavaScript action low PDF_JAVASCRIPT

PDF contains a /JavaScript action. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
Embedded JS stream low PDF_JS

PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
Suspicious extracted artifact info EXTRACTED_FILE_STATIC_TRIAGE

One or more files extracted from inside this sample matched static suspicious-content checks such as script obfuscation, encoded payload blobs, packed data, or execution/download terms.

Extracted artifacts 3

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`javascript_obj0007_000.js` `a5c8f0f722df4dd9876a0087e1eee65bd3020c5995f94f6729f7e17f3f3677a0`	pdf-javascript-stream	PDF /JS object 7 at offset 0x19D	331 bytes
`legacy_pdfkit_stage_000.js` `7949bff9ba8a6db9b0d1224c3cf3a63608f4e6d8e5ba047932cd0bb88ec5d918`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x2F2	12061 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 long base64-like blob(s).
`legacy_pdfkit_stage_001.js` `8e3bf7c18917c8b8fd18e160f56e595fcf246a87571480227048b18f87bd3b09`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x2F2	4974 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 5 eval/decoder/string-building token(s).

Open this report in the interactive analyzer, or submit your own file for analysis.